mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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286 lines
11 KiB
C++
286 lines
11 KiB
C++
//
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// Copyright (C) Pixar. All rights reserved.
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//
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// This license governs use of the accompanying software. If you
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// use the software, you accept this license. If you do not accept
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// the license, do not use the software.
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//
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// 1. Definitions
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// The terms "reproduce," "reproduction," "derivative works," and
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// "distribution" have the same meaning here as under U.S.
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// copyright law. A "contribution" is the original software, or
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// any additions or changes to the software.
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// A "contributor" is any person or entity that distributes its
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// contribution under this license.
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// "Licensed patents" are a contributor's patent claims that read
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// directly on its contribution.
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//
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// 2. Grant of Rights
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// (A) Copyright Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free copyright license to reproduce its contribution,
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// prepare derivative works of its contribution, and distribute
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// its contribution or any derivative works that you create.
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// (B) Patent Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free license under its licensed patents to make, have
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// made, use, sell, offer for sale, import, and/or otherwise
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// dispose of its contribution in the software or derivative works
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// of the contribution in the software.
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//
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// 3. Conditions and Limitations
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// (A) No Trademark License- This license does not grant you
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// rights to use any contributor's name, logo, or trademarks.
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// (B) If you bring a patent claim against any contributor over
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// patents that you claim are infringed by the software, your
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// patent license from such contributor to the software ends
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// automatically.
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// (C) If you distribute any portion of the software, you must
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// retain all copyright, patent, trademark, and attribution
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// notices that are present in the software.
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// (D) If you distribute any portion of the software in source
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// code form, you may do so only under this license by including a
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// complete copy of this license with your distribution. If you
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// distribute any portion of the software in compiled or object
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// code form, you may only do so under a license that complies
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// with this license.
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// (E) The software is licensed "as-is." You bear the risk of
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// using it. The contributors give no express warranties,
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// guarantees or conditions. You may have additional consumer
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// rights under your local laws which this license cannot change.
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// To the extent permitted under your local laws, the contributors
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// exclude the implied warranties of merchantability, fitness for
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// a particular purpose and non-infringement.
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//
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#include "../osd/ompKernel.h"
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#include "../osd/vertexDescriptor.h"
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#include <math.h>
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#include <omp.h>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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void OsdOmpComputeFace(
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OsdVertexDescriptor const &vdesc, float * vertex, float * varying,
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const int *F_IT, const int *F_ITa, int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = F_ITa[2*i];
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int n = F_ITa[2*i+1];
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float weight = 1.0f/n;
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// XXX: should use local vertex struct variable instead of
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// accumulating directly into global memory.
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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for (int j = 0; j < n; ++j) {
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int index = F_IT[h+j];
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vdesc.AddWithWeight(vertex, dstIndex, index, weight);
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vdesc.AddVaryingWithWeight(varying, dstIndex, index, weight);
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}
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}
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}
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void OsdOmpComputeEdge(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *E_IT, const float *E_W, int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int eidx0 = E_IT[4*i+0];
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int eidx1 = E_IT[4*i+1];
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int eidx2 = E_IT[4*i+2];
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int eidx3 = E_IT[4*i+3];
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float vertWeight = E_W[i*2+0];
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, vertWeight);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, vertWeight);
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if (eidx2 != -1) {
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float faceWeight = E_W[i*2+1];
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vdesc.AddWithWeight(vertex, dstIndex, eidx2, faceWeight);
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vdesc.AddWithWeight(vertex, dstIndex, eidx3, faceWeight);
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}
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
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}
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}
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void OsdOmpComputeVertexA(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const float *V_W,
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int offset, int tableOffset, int start, int end, int pass) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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int eidx0 = V_ITa[5*i+3];
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int eidx1 = V_ITa[5*i+4];
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float weight = (pass == 1) ? V_W[i] : 1.0f - V_W[i];
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// In the case of fractional weight, the weight must be inverted since
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// the value is shared with the k_Smooth kernel (statistically the
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// k_Smooth kernel runs much more often than this one)
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if (weight > 0.0f && weight < 1.0f && n > 0)
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weight = 1.0f - weight;
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int dstIndex = offset + i - tableOffset;
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if (not pass)
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vdesc.Clear(vertex, varying, dstIndex);
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if (eidx0 == -1 || (pass == 0 && (n == -1))) {
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vdesc.AddWithWeight(vertex, dstIndex, p, weight);
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} else {
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * 0.75f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, weight * 0.125f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, weight * 0.125f);
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}
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if (not pass)
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeVertexB(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const int *V_IT, const float *V_W,
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int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = V_ITa[5*i];
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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float weight = V_W[i];
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float wp = 1.0f/static_cast<float>(n*n);
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float wv = (n-2.0f) * n * wp;
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * wv);
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for (int j = 0; j < n; ++j) {
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j*2], weight * wp);
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j*2+1], weight * wp);
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}
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeLoopVertexB(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const int *V_IT, const float *V_W,
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int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = V_ITa[5*i];
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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float weight = V_W[i];
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float wp = 1.0f/static_cast<float>(n);
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float beta = 0.25f * cosf(static_cast<float>(M_PI) * 2.0f * wp) + 0.375f;
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beta = beta * beta;
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beta = (0.625f - beta) * wp;
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * (1.0f - (beta * n)));
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for (int j = 0; j < n; ++j)
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j], weight * beta);
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeBilinearEdge(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *E_IT, int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int eidx0 = E_IT[2*i+0];
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int eidx1 = E_IT[2*i+1];
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, 0.5f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
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}
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}
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void OsdOmpComputeBilinearVertex(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int p = V_ITa[i];
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, 1.0f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpEditVertexAdd(
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OsdVertexDescriptor const &vdesc, float *vertex,
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int primVarOffset, int primVarWidth, int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices, const float *editValues) {
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#pragma omp parallel for
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for (int i = start+tableOffset; i < end+tableOffset; i++) {
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vdesc.ApplyVertexEditAdd(vertex,
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primVarOffset,
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primVarWidth,
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editIndices[i] + vertexOffset,
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&editValues[i*primVarWidth]);
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}
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}
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void OsdOmpEditVertexSet(
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OsdVertexDescriptor const &vdesc, float *vertex,
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int primVarOffset, int primVarWidth, int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices, const float *editValues) {
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#pragma omp parallel for
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for (int i = start+tableOffset; i < end+tableOffset; i++) {
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vdesc.ApplyVertexEditSet(vertex,
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primVarOffset,
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primVarWidth,
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editIndices[i] + vertexOffset,
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&editValues[i*primVarWidth]);
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}
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}
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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